Infected scab oozing green liquid

Patient

Q:Hi,

i currently have three scabs, one on my head and one on each knee. my face and left knee's scab is healing well but my scab on my right knee is much slower and has green liquid coming out of the scab and next to it is a bump which is also leaking. I cant bend my knees without it hurting me. How do i treat the knee.

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